Weird pattern on Samsung Monitor with XFCE terminal

Hi all, 3 months ago I bought a new Samsung T350 monitor, but I have some weird patterns (vertical lines, flickering, and things like “ghost screen”) on the screen. I discovered that appears sometimes only when I use the terminal on XFCE with NVIDIA proprietary drivers.

inxi -Fxxxza –no-host:

System:
  Kernel: 5.10.96-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64
    root=UUID=544492c1-f068-4da0-aff5-7a8a309f4311 rw quiet
    udev.log_priority=3 apparmor=1 security=apparmor
  Desktop: Xfce 4.16.0 tk: Gtk 3.24.29 info: xfce4-panel wm: xfwm 4.16.1
    vt: 7 dm: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: ASUSTeK model: Z170-K v: Rev X.0x
    serial: <superuser required> UEFI: American Megatrends v: 3805
    date: 05/16/2018
CPU:
  Info: model: Intel Core i5-6600K bits: 64 type: MCP arch: Skylake-S
    family: 6 model-id: 0x5E (94) stepping: 3 microcode: 0xEA
  Topology: cpus: 1x cores: 4 smt: <unsupported> cache: L1: 256 KiB
    desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB L3: 6 MiB
    desc: 1x6 MiB
  Speed (MHz): avg: 801 high: 804 min/max: 800/4000 scaling:
    driver: intel_pstate governor: powersave cores: 1: 804 2: 800 3: 800 4: 800
    bogomips: 28009
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl and seccomp
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
    IBRS_FW, STIBP: disabled, RSB filling
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort mitigation: Clear CPU buffers; SMT disabled
Graphics:
  Device-1: NVIDIA GM206 [GeForce GTX 960] vendor: ZOTAC driver: nvidia
    v: 510.47.03 alternate: nouveau,nvidia_drm bus-ID: 01:00.0
    chip-ID: 10de:1401 class-ID: 0300
  Display: x11 server: X.Org 1.21.1.3 compositor: xfwm4 v: 4.16.1 driver:
    loaded: nvidia display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1016x286mm (40.0x11.3")
    s-diag: 1055mm (41.6")
  Message: Unable to show advanced data. Required tool glxinfo missing.
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170
    class-ID: 0403
  Device-2: NVIDIA GM206 High Definition Audio vendor: ZOTAC
    driver: snd_hda_intel v: kernel bus-ID: 01:00.1 chip-ID: 10de:0fba
    class-ID: 0403
  Sound Server-1: ALSA v: k5.10.96-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.20 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.45 running: no
Network:
  Device-1: Realtek RTL8188EE Wireless Network Adapter driver: rtl8188ee
    v: kernel port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8179 class-ID: 0280
  IF: wlp3s0 state: down mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: ASUSTeK PRIME B450M-A driver: r8168 v: 8.049.02-NAPI modules: r8169
    port: c000 bus-ID: 07:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp7s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:
  Local Storage: total: 2.95 TiB used: 1.05 TiB (35.5%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Corsair model: Force MP510
    size: 223.57 GiB block-size: physical: 512 B logical: 512 B
    speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: ECFM12.3
    temp: 40.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Seagate model: ST3000VN007-2AH16M
    size: 2.73 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    type: HDD rpm: 5980 serial: <filter> rev: SC60 scheme: GPT
Partition:
  ID-1: / raw-size: 38.42 GiB size: 37.57 GiB (97.78%)
    used: 22.56 GiB (60.0%) fs: ext4 dev: /dev/nvme0n1p6 maj-min: 259:6
  ID-2: /boot/efi raw-size: 150 MiB size: 147.7 MiB (98.45%)
    used: 301 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p5 maj-min: 259:5
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 29.8 C mobo: 27.8 C gpu: nvidia temp: 35 C
  Fan Speeds (RPM): N/A gpu: nvidia fan: 35%
Info:
  Processes: 201 Uptime: 2h 19m wakeups: 0 Memory: 31.3 GiB
  used: 3.36 GiB (10.7%) Init: systemd v: 250 tool: systemctl Compilers:
  gcc: 11.1.0 clang: 13.0.0 Packages: pacman: 1294 lib: 358 Shell: Bash
  v: 5.1.16 running-in: xfce4-terminal inxi: 3.3.12

What I tried (when the problem appears):
• Power off and unplug it from the power monitor and pc.
• Disconnect the HDMI cable.
• Connect the monitor to another pc.
• Reboot into windows.
• Enter the UEFI

Here some images: Imgur: The magic of the Internet

In all cases, the problem persist, so I think the problem is the monitor, because others monitors doesn’t have that problem, and when the pattern appears, the only solution is to wait around 20-30 minutes until they disappear and everything returns to normal. But on the other hand, I tested it on Manjaro KDE (proprietary drivers) and Xubuntu and Manjaro XFCE (open source drivers) and I don’t have that problem. The strange thing is that the trigger of the problem is only Manjaro XFCE with proprietary drivers, in addition, it also happens in the live usb.

Does the terminal cause the monitor (which could have a manufacturing defect) to fail? Any ideas?
Thanks